In a repeat of a scene played out at climate negotiations in years past, numerous organizations and hundreds of environmental activists walked out of the U.N. climate talks in Warsaw, Poland, on Thursday over the lack of progress toward a binding agreement to avert catastrophic climate change.

Yeb Saño choked up while speaking at the international climate conference in Warsaw in the wake of Typhoon Yolanda (Haiyan), which is estimated to have killed more than 10,000 people: “I speak for the countless people who will no longer be able to speak for themselves after perishing from the storm.”

The Polish people are having a rough time of it this spring. At least 14 people have died in recent days after Poland’s largest river, the Vistula, flooded an area some 50 miles away from Warsaw, and the capital city is in danger of becoming waterlogged as well.

Throngs of Polish mourners gathered to pay their respects to their late President Lech Kaczynski and his wife, Maria Kaczynska, whose bodies lay in closed coffins in Warsaw’s presidential palace Tuesday as the investigation into the plane crash that killed them and 94 others in Smolensk, Russia, continued.

Professional prankster group Improv Everywhere’s “No Pants Subway Ride” is one cultural trend that appears to be taking off. Despite a frigid winter, participants in as many as 43 cities around the world commuted in their underwear, and we’ve got photos to prove it.